Dust and smoke conveyer for cars.



PATENTED SEPT. 5, 1905.

I. A. PUTNAM. DUST AND SMOKE CONVBYER FOR CARS.

APPLICATION IILED 1613.24. 1905.

2 SHBETSSHBET 1.

MDREW a mum co, mwufmmmns, msmnaron. n c.

PATENTED SEPT. 5, 1905.

I. A. PUTNAM.

DUST AND SMOKE GONVEYER FOR CARS.

APPLICATION FILED MAR. 24. 1905.

2 SHEETS-SHEET 2- mullw 3. emu co, nwmmnoanunm! wmmum, u c

UNITED STATES PATENT OFFICE.

DUST AND SMOKE CONVEYER FOR CARS.

Specification of Letters Patent.

Patented Sept. 5, 1905.

Application filed March 24, 1905. Serial No. 251,881.

To (07] 1141mm it may concern/.-

Be it known that I, lvY ADAMS PU'INAM, a citizen of the United States,residing at San Francisco, in the county of San Francisco and State ofCalifornia, have invented new and useful Improvements in Dust and SmokeConveyers for Cars, of which the following is a specification.

This invention relates to dust and smoke ducts for cars, and has for itsobjects to produce a comparatively simple device of this character whichmay be readily and inexpensively applied to the cars and one which willin practice serve to convey the smoke and dust to and deliver it at therear end of the train, thus effectually preventing entrance of suchimpurities into the car, and consequently increasing the cleanliness andsanitary conditions of the latter.

To these ends the invention comprises the novel features of constructionand combination of parts more fully hereinafter described.

In the accompanying drawings, Figure 1 is a perspective view of aportion of a car equipped with ducts in accordance with the invention.Fig. 2 is a vertical transverse section of the ar. Fig. 3 is a sideelevation of one of the side ducts. Fig. & is a plan view of one of theroof-ducts. Fig. 5 is a detail view of the inlet-nozzles.

Referring to the drawings, 1 designates a car comprising side walls 2and a top or roof 3, the car being of the usual or any appropriateconstruction and material, inasmuch as the same constitutes no part ofthe present invention.

1n accordance with my invention 1 apply to the side walls 2, preferablyadjacent their lower edges, longitudinal ducts a and to the roof 3 aplurality of longitudinal ducts 5, these d ucts being all composed,preferably, of sheet metal and of substantially semicircular form incross-section, as illustrated in Fig. 2. The upper ducts 5 are providedwith outwardly-projecting longitudinal flanges 6, perforated at suitableintervals for the reception of bolts or other fastening members 7, bywhich the ducts are secured to the car, while the ducts 4 have at theirupper edges longitudinal outturned flanges 8 and at their lower edgesinturned flanges 9, likewise perforated at intervals for the receptionof fastening members or bolts 10 employed in securing the ducts to theside walls of the car, attention being directed to the fact that all theducts are open at their ends and are wholly free from internalobstructions, thus to permit free passage of smoke, dust, or otherimpurities therethrough. The lower side d ucts 4: are each provided withtwo sets or pairs of inlet pipes or nozzles 11, arranged, respectively,adjacent the terminal ends of the duct. The nozzles 11, whichcommunicate with the interior of the duct, are inclined downwardly andoutwardly in opposite directions toward the opposite ends of the car andhave their outer inlet ends or months 12 equipped with pivoted valves orclosures 13, adapted for closing the nozzles and to be maintained inclosed position by means of spring-catches or other retaining memberslet.

in practice as the car advances air passing through the ducts 4: and 5creates a strong suction or induced draft within the latter, thusserving to draw into the ducts a any dust arising beneath the car owingto its passage over the railsand into theducts5 smoke, cinders, andother products of combustion escaping from the smoke-stack of theengine. The dust and smoke travel freely through the ducts and arereceived from the d nets on one car by those on the next throughout atrain of cars, thus being conveyed to and delivered at the rear of thetrain. Prior to setting the car in motion the valves '13 of the nozzlesprojecting toward the forward end or in the direction of advance of thecar are opened, while those of the oppositely-extended nozzles areclosed, whereby as the train advances the dust will find entrance intothe d ucts a through the open nozzles or inlets, as will be readilyunderstood. It may be mentioned thatowing to the peculiar disposition ofthe nozzles the dust will be drawn more readily thereinto for entranceinto the ducts.

From the foregoing it is apparent that I produce a simple device whichmay be readily and inexpensively applied to the various types of carsnew in general use and one which in practice will render the cars cleanand sanitary owing to the impurities being conveyed to and delivered atthe rear of the car or train of cars, it being understood that inattaining these ends various changes in the details of constructionherein set forth may be resorted to without departing from the spirit ofthe invention.

,Having thus fully described the invention,

what is claimed as new is- 1. In a device of the class described, a car,a duct attached to one wall of the car and free from communication withthe interior of the latter, an inlet-nozzle communicating with the ductat a point remote from the end of the latter, and a closure for themouth of the nozzle.

2. In a device of the class described, a car, a duct attached to oneWall of the car and free from communication With the interior of the ilatter, an inlet-nozzle communicating With and at a point remote fromthe end of the

